Zohran Mamdani-backed progressive candidates won three New York congressional primaries, delivering upsets over established incumbents and consolidating left-wing influence in the city.Darializa Avila Chevalier defeated Rep. Adriano Espaillat after her links to Columbia pro-Palestine protests and pro-Israel lobbying became focal to the race, while Brad Lander beat Rep. Dan Goldman and Claire Valdez edged Antonio Reynoso.The victories were driven by young, multiracial and college-educated coalitions plus organizing by the Democratic Socialists of America, prompting praise from Pramila Jayapal and Alexandria Ocasio-Cortez and concern from moderates over governance and November messaging.